Keiichirō Saitō (斎藤 圭一郎, Saitō Keiichirō; born on January 18, 1993) is a Japanese director and key animator, best known for directing the first season of both Bocchi the Rock! and Frieren: Beyond Journey's End.
Source: “Keiichirō Saitō”, English Wikipedia (CC BY-SA 4.0), excerpt
